Fermentation tank for deep processing of agricultural products
By combining the design of the impellers, the turbine impeller breaks up bubble aggregation and the anchor impeller eliminates dead zones in the flow, achieving efficient oxygen transfer and material mixing in the fermenter, thus improving dissolved oxygen uniformity and mixing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SANFENDI BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional fermenters have low oxygen transfer efficiency in deep or high-viscosity materials, bubbles tend to coalesce easily, dissolved oxygen concentration gradients are large, aerobic bacteria metabolism is restricted, and stirring efficiency needs to be improved.
The system employs a combined mixing impeller, including a turbine impeller and an anchor impeller. The turbine impeller generates a high-speed radial flow to break up bubble coalescing, while the anchor impeller eliminates dead zones in the flow. Combined with bottom microbubbles and axial jet oxygen supply modes, it improves dissolved oxygen uniformity and mixing efficiency.
It significantly improves mixing efficiency and dissolved oxygen uniformity, solving the problems of low oxygen transfer efficiency and poor stirring effect.
Smart Images
Figure CN224199358U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural product processing technology, specifically relating to a fermentation tank for deep processing of agricultural products. Background Technology
[0002] Fermentation tanks, used in the deep processing of agricultural products, are a key piece of equipment. They are primarily used to process agricultural raw materials into high-value-added products through the biotransformation of microorganisms or enzymes. Their applications are wide-ranging, covering multiple fields such as food, beverages, bioenergy, and pharmaceuticals.
[0003] Traditional fermenters use aeration devices with low oxygen transfer efficiency in deep or high-viscosity materials, and bubbles tend to coalesce, resulting in large dissolved oxygen concentration gradients and limited aerobic bacterial metabolism; in addition, there is room for improvement in the stirring efficiency of existing stirring devices.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this utility model is to provide a fermentation tank for deep processing of agricultural products, which can solve the problems of low oxygen transfer efficiency of the aeration device and the need to improve the stirring effect of the stirring device.
[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:
[0007] A fermentation tank for deep processing of agricultural products, comprising:
[0008] The fermenter body includes a shell, on which a top cover is detachably mounted, which facilitates maintenance and replacement of internal components.
[0009] The agitation and aeration mechanism includes a rotating shaft rotatably connected to the upper cover plate. A combined agitator is mounted on the side wall of the housing, and the rotating shaft drives the combined agitator to rotate, thereby agitating the materials within the housing. The combined agitator design changes the traditional agitator method, improving the agitation effect. The combined agitator includes a turbine blade and an anchor blade. The turbine blade generates a high-speed radial flow, breaking up bubble coalescing and enhancing gas-liquid mass transfer efficiency. The anchor blade rotates at a low speed close to the tank wall, eliminating dead zones in the flow of high-viscosity materials and preventing sedimentation. Thus, the combined agitator, through synergistic action, significantly improves mixing efficiency and dissolved oxygen uniformity. A ventilation groove is formed inside the rotating shaft, and a gas distributor is fixedly connected to the bottom of the rotating shaft. The gas distributor is connected to the ventilation groove, and multiple atomizing nozzles are installed on the bottom wall plate of the gas distributor. Gas for aeration is transported to the gas distributor through the ventilation groove, and then transported to the bottom near the shell through the atomizing nozzles, so that the gas flows upward from the bottom of the shell. Under the stirring action of the combined stirring paddle, the uniformity of dissolved oxygen during aeration is improved. Multiple micropores are formed on the side wall of the rotating shaft inside the shell at equal intervals, so that the gas transported by the ventilation groove can be transported into the material through multiple micropores, thereby forming a dual oxygen supply mode of bottom microbubbles and axial jet through the atomizing nozzles and micropores.
[0010] In one or more embodiments of this utility model, a feeding component is provided on the upper cover plate, and a discharging component is provided at the bottom of the housing.
[0011] In one or more embodiments of this utility model, multiple turbine propellers are provided, and the multiple turbine propellers are fixedly connected to the side wall of the rotating shaft in pairs.
[0012] In one or more embodiments of this utility model, the anchor paddle is disposed below the turbine paddle and fixedly connected to the side wall of the rotating shaft. Multiple crushing blades are fixedly connected to the front and rear side walls of the anchor paddle crossbar. When the anchor paddle drives the crushing blades to rotate, the crushing blades can crush and stir the material, thereby improving the mixing effect of the material.
[0013] In one or more embodiments of this utility model, the distance between the anchor paddle and the inner wall of the shell is 3~5mm.
[0014] In one or more embodiments of this utility model, the gas distributor is configured as a conical structure with a small opening at the top and a large opening at the bottom. The outer diameter of the upper end of the gas distributor is the same as the outer diameter of the rotating shaft, so that when the gas distributor is positioned near the bottom of the housing, the adhesion of material on the outer wall of the gas distributor is reduced.
[0015] In one or more embodiments of this utility model, multiple microholes are provided on the same cross-section of the rotating shaft. The microholes are arranged in a downward inclined manner from the inner sidewall to the outer sidewall of the rotating shaft. The included angle between the microholes and the central axis of the rotating shaft is set to 30~45 degrees, so that while the multiple microholes deliver gas to the material, the material is prevented from entering the microholes.
[0016] In one or more embodiments of this utility model, the rotating shaft is provided with a plurality of air inlets at equal intervals on the side wall above the upper cover plate, and the plurality of air inlets are connected to the ventilation groove so as to deliver gas into the ventilation groove through the air inlets.
[0017] In one or more embodiments of this utility model, an air supply ring is rotatably connected to the side wall of the rotating shaft on the outside of a plurality of air inlets. The air supply ring is sealed to the rotating shaft, so that the air inlets and the air supply ring can rotate relative to each other, and gas will not leak while the air inlets and the air supply ring rotate relative to each other.
[0018] In one or more embodiments of this utility model, a gas supply pipe is installed on the side wall of the gas supply ring, and a regulating valve is installed on the gas supply pipe to supply gas to the air inlet. The regulating valve is used to control the flow rate of the supplied gas.
[0019] Compared with the prior art, this utility model is equipped with a combined stirring paddle. The rotation of the turbine paddle breaks up the agglomeration of bubbles and enhances the gas-liquid mass transfer efficiency. The rotation of the anchor paddle eliminates the flow dead zone of high-viscosity materials and prevents sedimentation. Oxygen is delivered through a dual oxygen supply mode of bottom microbubbles and axial jet and then comes into contact with the materials. Thus, through the synergistic effect with the combined stirring paddle, the mixing efficiency and dissolved oxygen uniformity are significantly improved. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a front view of a fermentation tank for deep processing of agricultural products according to one embodiment of the present invention;
[0022] Figure 2 This is a cross-sectional view of a fermentation tank for deep processing of agricultural products according to one embodiment of the present invention;
[0023] Figure 3This is a cross-sectional view of a fermentation tank for deep processing of agricultural products according to one embodiment of the present invention;
[0024] Figure 4 This utility model Figure 3 A schematic diagram at point A in the middle;
[0025] Figure 5 This is a schematic diagram of the combined stirring paddle in this utility model;
[0026] Figure 6 This is an exploded view of the gas delivery ring and the rotating shaft in this utility model.
[0027] Explanation of key figure labels:
[0028] 1-Fermentation tank body, 11-Shell, 12-Top cover, 13-Feeding component, 14-Discharge component, 2-Agitating and aeration mechanism, 21-Rotating shaft, 22-Turbine propeller, 23-Anchor propeller, 24-Crushing blade, 25-Ventilation groove, 26-Gas distributor, 27-Atomizing nozzle, 28-Micropore, 29-Air inlet, 210-Air supply ring, 211-Air supply pipe, 212-Regulating valve. Detailed Implementation
[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0030] like Figures 1-3 As shown, a fermentation tank for deep processing of agricultural products in one embodiment of this utility model includes a fermentation tank body 1 and a stirring and aeration mechanism 2.
[0031] like Figures 1-3 As shown, the fermenter body 1 includes a shell 11, and a top cover 12 is detachably installed on the shell 11. The detachable nature of the top cover 12 facilitates the maintenance and replacement of the internal components of the shell 11.
[0032] like Figures 1-3 As shown, a feeding component 13 is provided on the upper cover plate 12, and a discharging component 14 is provided at the bottom of the housing 11.
[0033] like Figures 1-4As shown, the stirring and aeration mechanism 2 includes a rotating shaft 21, which is rotatably connected to the upper cover plate 12 through a through-hole. A combined stirring paddle is installed on the side wall of the rotating shaft 21 inside the shell 11. The rotating shaft 21 drives the combined stirring paddle to rotate, thereby stirring the material inside the shell 11. The combined stirring paddle is designed to change the traditional stirring method of the stirring paddle and improve the stirring effect of the stirring paddle on the material. The combined stirring paddle includes a turbine paddle 22 and an anchor paddle 23. When the turbine paddle 22 rotates, it generates a high-speed radial flow, breaking up bubble coalescence and enhancing gas-liquid mass transfer efficiency. The anchor paddle 23 rotates at a low speed close to the tank wall, eliminating the flow dead zone of high-viscosity materials and preventing sedimentation. Thus, the combined stirring paddle significantly improves mixing efficiency and dissolved oxygen uniformity through synergistic effect. A ventilation groove 25 is provided inside the rotating shaft 21. A gas distributor 26 is fixedly connected to the bottom of the rotating shaft 21 and communicates with the ventilation groove 25. Multiple atomizing nozzles 27 are installed on the bottom wall of the gas distributor 26. Gas for aeration is transported to the gas distributor 26 through the ventilation groove 25, and then transported to the bottom near the shell 11 through the atomizing nozzles 27, so that the gas flows upward from the bottom of the shell 11. Under the stirring action of the combined stirring paddle, the uniformity of dissolved oxygen during aeration is improved. Multiple micro-holes 28 are provided on the side wall of the rotating shaft 21 inside the shell 11 at equal intervals, so that the gas transported by the ventilation groove 25 can be transported into the material through the multiple micro-holes 28, thereby forming a dual oxygen supply mode of bottom microbubbles and axial jet through the atomizing nozzles 27 and micro-holes 28.
[0034] like Figure 2 and Figure 3 As shown, multiple turbine propellers 22 are provided, and the multiple turbine propellers 22 are fixedly connected to the side wall of the rotating shaft 21 in pairs.
[0035] like Figure 2 and Figure 5 As shown, the anchor paddle 23 is located below the turbine paddle 22 and is fixedly connected to the side wall of the rotating shaft 21. Multiple crushing blades 24 are fixedly connected to the front and rear side walls of the crossbar of the anchor paddle 23. When the anchor paddle 23 drives the crushing blades 24 to rotate, the crushing blades 24 can crush and stir the material, thereby improving the mixing effect of the material.
[0036] like Figure 3 As shown, the diameter ratio of the turbine propeller 22 to the diameter of the shell 11 is 1:3, and the distance between the anchor propeller 23 and the inner wall of the shell 11 is 3~5mm.
[0037] like Figure 4As shown, the gas distributor 26 is configured as a conical structure with a small opening at the top and a large opening at the bottom. The outer diameter of the upper end of the gas distributor 26 is the same as the outer diameter of the rotating shaft 21, which reduces the adhesion of material on the outer wall of the gas distributor 26 when the gas distributor 26 is positioned near the bottom of the housing 11.
[0038] Preferred, such as Figure 4 As shown, multiple atomizing nozzles 27 are inclined in a way that diffuses outward, so that the multiple atomizing nozzles 27 release gas evenly into the housing 11, thereby increasing the contact area between the gas and the material.
[0039] like Figure 4 As shown, multiple microholes 28 are provided on the same cross section of the rotating shaft 21. The microholes 28 are arranged in a downward inclined manner from the inner side wall to the outer side wall of the rotating shaft 21. The included angle between the microholes 28 and the central axis of the rotating shaft 21 is set to 30~45 degrees, so that while the multiple microholes 28 deliver gas to the material, the material is prevented from entering the microholes 28.
[0040] like Figure 6 As shown, the rotating shaft 21 is located on the side wall above the upper cover plate 12 and has multiple air inlets 29 at equal intervals. All air inlets 29 are connected to the ventilation groove 25 so as to deliver gas into the ventilation groove 25 through the air inlets 29.
[0041] Such as 1 and Figure 6 As shown, an air supply ring 210 is rotatably connected to the side wall of the rotating shaft 21 on the outside of multiple air inlets 29. The air supply ring 210 is sealed to the rotating shaft 21, so that the air inlets 29 and the air supply ring 210 can rotate relative to each other, and the gas will not leak while the air inlets 29 and the air supply ring 210 rotate relative to each other.
[0042] like Figure 6 As shown, a gas supply pipe 211 is installed on the side wall of the gas supply ring 210, and a regulating valve 212 is installed on the gas supply pipe 211. Gas is supplied to the air inlet 29 through the gas supply pipe 211, and the regulating valve 212 is used to control the flow rate of the supplied gas.
[0043] In use, when the rotating shaft 21 is driven to rotate by the motor, the rotating shaft 21 can drive the turbine propeller 22 and the anchor propeller 23 to rotate. The combined stirring paddle of the turbine propeller 22 and the anchor propeller 23 stirs the material in the shell 11. At the same time, gas is delivered to the ventilation slot 25 through the gas supply pipe 211. The gas in the ventilation slot 25 is atomized by multiple atomizing nozzles 27 and multiple micro-holes 28 and then delivered to the shell 11 to contact the material. In order to deliver gas to the material through the dual oxygen supply mode of bottom micro-bubbles and axial jet, the synergistic effect of the combined stirring paddle significantly improves the mixing efficiency and dissolved oxygen uniformity.
[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A fermentation tank for deep processing of agricultural products, characterized in that, include: The fermenter body includes a shell, on which a top cover is detachably mounted; The agitation and aeration mechanism includes a rotating shaft rotatably connected to an upper cover plate through a through-hole. A combined agitator is mounted on the side wall of the rotating shaft inside the housing. The combined agitator includes a turbine impeller and an anchor impeller. An air vent is provided inside the rotating shaft. A gas distributor is fixedly connected to the bottom of the rotating shaft and communicates with the air vent. Multiple atomizing nozzles are installed on the bottom wall of the gas distributor. Multiple micropores are provided on the side wall of the rotating shaft inside the housing at equal vertical intervals.
2. The fermentation tank for deep processing of agricultural products according to claim 1, characterized in that, The upper cover plate is provided with a feeding component, and the bottom of the shell is provided with a discharging component.
3. The fermentation tank for deep processing of agricultural products according to claim 1, characterized in that, The turbine propellers are provided in multiples, and the multiple turbine propellers are fixedly connected to the side wall of the rotating shaft in pairs.
4. A fermentation tank for deep processing of agricultural products according to claim 3, characterized in that, The anchor-type propeller is located below the turbine propeller and is fixedly connected to the side wall of the rotating shaft. Multiple cutting blades are fixedly connected to the front and rear side walls of the anchor-type propeller crossbar.
5. A fermentation tank for deep processing of agricultural products according to claim 4, characterized in that, The distance between the anchor propeller and the inner wall of the hull is 3~5mm.
6. A fermentation tank for deep processing of agricultural products according to claim 1, characterized in that, The gas distributor is configured as a conical structure with a small opening at the top and a large opening at the bottom, and the outer diameter of the upper end of the gas distributor is the same as the outer diameter of the rotating shaft.
7. A fermentation tank for deep processing of agricultural products according to claim 1, characterized in that, Multiple microholes are provided on the same cross-section of the rotating shaft. The microholes are arranged in a downward inclined manner from the inner side wall to the outer side wall of the rotating shaft. The included angle between the microholes and the central axis of the rotating shaft is set to 30~45 degrees.
8. A fermentation tank for deep processing of agricultural products according to claim 1, characterized in that, The rotating shaft is located on the side wall above the upper cover plate and has multiple air inlets at equal intervals. All of the air inlets are connected to the ventilation groove.
9. A fermentation tank for deep processing of agricultural products according to claim 8, characterized in that, An air supply ring is rotatably connected to the side wall of the rotating shaft on the outside of multiple air inlets, and the air supply ring is sealed to the rotating shaft.
10. A fermentation tank for deep processing of agricultural products according to claim 9, characterized in that, An air supply pipe is installed on the side wall of the air supply ring, and a regulating valve is installed on the air supply pipe.